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let the age of son be x, so age of mother is x + 25

After 8 years, gather e of son is x + 8 and age of mother is x + 25 + 8

So according to give conditions

Now solving the equation

Multiplying both sides by

Multiplying both sides by 4(x + 25 + 8)

9(x + 8) = 4(x + 33)

Expanding the equation

9x + 72 = 4x + 132

Adding – 4x – 72 on both sides

5x = 60

Dividing by 10 on both sides

x = 12

So, age of son is 12 years